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( o Model) S. 0. HIGKOK.

SPRING TOOTHED SULKY HARROW. "-No'. 270,067. Patented Jan. 2, 1883.

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l 5 lower side of the shoe F is designed to rest .UNTTED STATES PATENT Tr ce.

STEPHEN ()..l'llOKOK, OF ALLEN, MICHIGAN, ASSIGNOR TO HIMSELF AND JOHN HERRING, OF SAME PLACE. v

SPRING-TOOTHED SULKY-HARROW.

SPECIFICATION forming part of Letters PatentN'o. 270,067, dated January 2, 1883.

' Application filed April 29, 1882. (No model.)

To all whom it may concern:

Be it known that LSTEPHEN O. HICKOK, of Allen, Hillsdale county, Michigan, have invented a new and useful Improvement in 5 Spring-Toothed Sulky-Harrows, of which the following is afull, clear, and exact description.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters ot' reference indicate [0 corresponding parts in all the figures.

Figure l is a rear elevation of my improvement, half of the teeth being shown raised. Fig. 2 is asectional side elevation of the same, taken through the line 0050, Fig. 1. Fig. 3 is a [5 plan view of one ofthe shoes, the upper parts of the tooth and draw-bar being broken away.

The object of this invention is to promote convenience in using harrows, and also to facilitate the repairing of the harrows when 20 worn. i

The invention consists in a spring-toothed sulky-harrow constructed with curved springteeth attached adjustably to shoes that slide upon theground, and are attached to draw- 2 5 bars hinged to the carriage-frame. With the draw-bars are connected chains attached to bars pivoted eccentrically to the carriage, and provided with levers for raising and lowering the teeth, as will be hereinafter fully described. A represents the wheels of the machine, to the axle B of which are attached the frame G and the tongue D, the said tongue being also attached to the front bar of the said frame 0. y E are the teeth, which are bent into nearly 5 circular form, as shown in Fig. 2, and are attached at their upper ends to the shoe F by one or more bolts, G. The tooth E" is slotted or has two or more holes formed through, it to receive the bolt or bolts G, so that the said o'tooth can be readily adjusted to work deeper or shallower in the ground, as the work to be done may require. The upper side of the shoe .F is-recessed to receive the tooth E and hold the said tooth against lateral movement. The

and slide upon the ground when the harrow is at work, and is rounded oil to cause it to move over the ground easily.-

teeth will yield and rise should they strike an 5 I obstruction, and thus readily pass over the said obstruction. With-this construction the teeth will conform to an uneven surface, so

that all parts of the ground will be properly cultivated.

To the draw-bars H, near the shoes F', are attached the lower ends of chains I, the upperends of'which are attached to bars J. The bars J, each of which extends halt across the. machine,are placed end to end, and are pivs oted eccentrically to supports K, attached to the frame 0 or axle B, so that the teeth E can be raised from the ground and lowered into working position" by turning the bars J upon their pivots. I To each of the bars J is attached a lever, L, by means of which the said bars are turned to raise and lower the teeth E. By thisconstruction half the teeth E will be raised and lowered at a time. Any particular tooth can be raised at any time by 7 5 taking hold'of its chain I.

M is the drivers seat, the standard N of which is attached to the rear part of the tongue D, so that the levers L can be readily reached and operated by the driver from his seat. 80 With this construction one or more of the middle teeth can be raised and the machine used for harrowing both sides ofa row of plants.

When desired a grain-box can be attached to the forward part of the frame and the machine used as a broadcast seeder.

I am aware that drag-bars and adjustable spring-teeth have before been used in a manner similar to mine, as'in Patent No. 258,081, and I do notclaim the invention therein shown; but

What I claim Patent, is-- 1. Inasulky-harrow, the combination ofdragbars H, hinged at their forward ends, and pro- 5 vided with shoes F at their rear ends to slide and wish to secure by Letters .as shown and described.

on the ground, with teeth adjustably secured bolt for thepnrpose of setting it more or less to said shoes, so that said teeth may project deep in the ground below the drag-shoeF, as more or less below the shoes into the ground, shown and. described.

STEPHEN OLIN HICKOK.

2. The combination, with the dragbar H Witnesses: and shoe 110i the curved spring-tooth E, A. G. HOWE, slotted in its shank to slide on its fastening- L. M. HOWE. 

